Simple C# availability canary Function App

AvailabilityCanaryFunction.cs

using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.Extensions.Logging;

namespace HealthTest2
{
    public class CanaryFunction
    {
        readonly ILogger _logger;

        public CanaryFunction(ILoggerFactory loggerFactory)
        {
            _logger = loggerFactory.CreateLogger("Function.CanaryFunction.User");
        }

        [FunctionName("FunctionOK")]
        public Task<IActionResult> RunOk(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "ok")] HttpRequest req)
        {
            _logger.LogInformation("Helth test request: OK");

            return Task.FromResult<IActionResult>(new OkObjectResult("OK"));
        }

        [FunctionName("FunctionBAD")]
        public Task<IActionResult> RunBad(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "bad")] HttpRequest req)
        {
            _logger.LogInformation("Helth test request: BAD");

            return Task.FromResult<IActionResult>(new BadRequestObjectResult("BAD"));
        }

        [FunctionName("FunctionERR")]
        public Task<IActionResult> RunErr(
            [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "err")] HttpRequest req)
        {
            _logger.LogInformation("Helth test request: ERR");

            throw new Exception("ERR");
        }
    }
}